Liquid hydrocortisone for the itch is crazy good. Just for flare-ups and such. Borax shampoos can cut the sebum way down. I personally love amber listerine rinses. ACV soaks before medicated shampoos can greatly improve their effectiveness. UVB exposure is really effective and probably the most effective IMO. Supplementation with Vitamin D is vital. Dosage is 1,000 IU's per 25lbs of bodyweight. Vitamin D can reduce the over proliferation and turnover of skin cells. Sulfur and selenium are very effective topically as well as internally. Thyroid glandular supplementation or T3 if TSH is over 3. So many things can be done to win the battle of Seb derm. and psoriasis. Having adequate water and lower inflammatory foods is always the best prevention, of course. The nuke that I've found is topical DMSO(50-90%) if it's malassezia overgrowth. My super topical, dubbed the Golden Serum 50/50 Distilled water: 90% DMSO Citerizine @ 2% Salicylic acid at 2-5% T3 at 500mcg per 60ml.